Abstract: In order to study the intrinsic influence mechanism of online interaction on customer trust in online live shopping, based on the interactive perspective, the social presence is introduced as a mediator variable, and a model between interaction and trust is constructed.It is found that the customer's sense of space presence and social presence in online shopping is realized based on the interaction mechanism, which is a three-party body composed of customers, websites and sellers. Among them, the sense of space presence and social presence have a certain influence on the construction mechanism of customers and online shopping trust, and depending on the type of trust, it can be divided into three categories: competence trust, honest trust and good faith trust. Space presence creates the first type of trust, and social presence creates two senses of trust. In order to improve the level of mutual trust between buyers and sellers in the online live shopping model, the research also gives corresponding suggestions based on the research results of the project.

Key words: seller-customer interaction, social presence, mutual trust research